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Integrate x^2e^x with respect to x between the limits of x=5 and x=0.

This question is to test integration by parts. First let u=x 2 and u'=2x as a result, and v'=e x and so v=e x too. Then use the by parts formula to express the integral as x 2 e x ​​​​​​​-2(integral of):(xe ...
AA
Answered by Alex A. • Maths tutor
6416 Views

Give the reagents required for the nitration of toluene (methylbenzene) to 2,4,6-trinitrotoluene and provide a mechanism.

The reagents needed are sulphuric acid and nitric acid. It may be useful to notice that nitric acid here acts as a stoichiometric reagent, in that it is used up in the reaction to nitrate the toluene, but su...
AA
Answered by Alex A. • Chemistry tutor
8760 Views

In einem im 'Spiegel...(veröffentlichen) Bericht heißt es, dass die Eltern,...(Artikel) Kinder zweisprachig aufwachsen,...(hoch) Ansprüche an...(their) Kinder...(haben), als die Lehrer,...(Artikel)...(pronoun for Kinder) unterrichteten.

Firstly, I would go through each stage of the sentence with the student. They must write each verb, noun or pronoun in the correct case and tense with the correct endings. At each step I would expect not onl...
KR
3744 Views

What is the function of the control rods in the entire fission reactor proccess?

Fuel rods provide fissionable elements such as uranium - 235 , The uranium abosrbs a neutron at thermal speeds ( energy transefered to the moderator) from previous reactions. This then enables the Uranium to...
CS
Answered by Charles S. • Physics tutor
5882 Views

Explain the role of plant hormones in plant shoot and root growth

Auxins are degraded within the tips of the shoots of the plant exposed to sunlight, and gather on the shaded side of the shoots. Gathered auxins enourage cell elongation, and the shoot to grow upwards, towar...
EL
Answered by Edward L. • Biology tutor
7856 Views